Improvement in dies for swaging wrenches



dinard giant 1g tutti chtite.

Letters Patent No. 108,502` dated October 18, 1870.

IMPRQVEM'ENT IN DIES FOR SWAGING WRENCHES.'

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it Vmay concern.'

Be it known that I, Tnonas Markus, of Louisville, in the county of' Jefferson and State of Kentucky, have invented certain Improvements in Dies for Swaging NVrenches; and I do hereby dcciarc that the following is a full', clear, and exact description thereof', reference heilig had to the annexed drawing making part of this specieation, in which- Figure l is a plan View ot' the lower die, showing the different forms to which the iron is reduced on being converted into a wrench.

Figure 2 isa transverse vertical section of' both dies, showing the recess in which the finishing operation is performed upon the wrench.

Figure 3 is a section of' a longitudinal elevation, showing the cavities in which the handle ofthe wrench is swaged, and a projection upon one end of one of' the dies, which may be used for attaching it to the anvil, or to the helve of the hammer.

Figure I is a representation of the appearance of' the blank after the first swaging operation has been performed.

Figure 5 is a representation of the blank after the swaging has been completed.

Figure (i is a representation of the wrench after it has been completed by cutting a screw-tlncad upon Aits rounded end, and punchingout a portion of' its liattened end, to adapt it to receive the nut to be turned.

This invention relates to dies for swaging wrenches which are designed to hc used in connection with plows, and which are denominated clevis\'vrenehes.

It is vocv desirable that, in this type of wrenches, the parts should be of uniform size, as, when thcyare made in quant-ities, their rounded portions are required to pass through and properly fit a hole'of a given diameter in the clevis, while their flattened and slotted ends are required to fit the several nuts upon a plow. The object of this invention is to provide dies which shall rapidly swage, from bars of iron, wrenches which shall meet the above-recited requirements.

With a view to the accomplishment of' the abovenamed results, this invention consists in the construction and arrangement of' dies, as will be more fully explained hereinafter.

A Ain the drawings refer to dies which are made of castiron, and have the cavities in their faces formed when they are cast, but which are far better when made of cast-steel, er of wrought iron, and faced with steel, in which case the eavitiesshould be milled or drilled out. One or both of 4these dies maybe made with a projection upon itsv or their ends; as

shown in fig. 3, hy which to secure it to an anvil or anvil-block, or to the llelve of a trip-hammer.A They should be of' sufficient length to allow room in their faces for the number of' cavities shown in the drawings, and of sutiicient width to properly swage the different parts of the wrench.

B B refer to the cavities in the face of the dies, one-half ot' which is in the upper one, and the other .half in the lower one., in which the blank or bar of iron is first placed to he swaged. 'lhis bar should be somewhat larger than the shank of' the wrench after itI is finished, or nearly as large as the largest diameter of the cavity in the dies. The bar of iron or blank .from which the wrench is to be swaged, after being heated, is to be placed upon the lower die, and'iu or over the cavity B. By a vfew strokes of the upper. die, during which the operator must turn the rod, to

prevent the formation of tins, a blank, as shown in i fig. 4, will be formed.

O refers to a cavity, which is used to finish the swaging of' the handle or shank of' the wrench; and

l) refers to the cavity in which the globe or ball upon the end ot' the blank 1 is swaged into the form shown at 2 in fig. 5; or, if preferred, slight projections may be raised iu the surfaces of such cavities, as shown in fig. 2, which will swage the wrench into the form shown in fig. 1, thus indicating the portion which is to be cut or punched out, in order to give y witnesses.

THOMAS MEIKLE. Witnesses:

J. E. BADGER, J Anas BELL'. 

